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<h1 class="topictitle1">恢复文件系统</h1>
<div id="body0000001234156055"><p id="ZH-CN_TOPIC_0000001234156055__p8060118">当需要对已备份的文件系统进行恢复时，可以参考本节恢复文件系统至原位置或新位置。</p>
<div class="section" id="ZH-CN_TOPIC_0000001234156055__section1224491116489"><h4 class="sectiontitle">前提条件</h4><p id="ZH-CN_TOPIC_0000001234156055__p1625010241105">已产生文件系统备份副本。</p>
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<div class="section" id="ZH-CN_TOPIC_0000001234156055__section6539155125419"><h4 class="sectiontitle">注意事项</h4><ul id="ZH-CN_TOPIC_0000001234156055__ul1587743275414"><li id="ZH-CN_TOPIC_0000001234156055__li030795165718">不支持恢复到WORM/CLONE/非UNIX安全模式文件系统。</li><li id="ZH-CN_TOPIC_0000001234156055__li1187703205410">不支持恢复到名称以“pvc_”开头的文件系统。</li><li id="ZH-CN_TOPIC_0000001234156055__li1082581817276">不支持恢复至异步远程复制从端的文件系统。</li><li id="ZH-CN_TOPIC_0000001234156055__li19618339132617">双活脑裂后，仲裁失败端不支持恢复。</li><li id="ZH-CN_TOPIC_0000001234156055__li2014477377">整副本恢复到原位置不会删除副本生成时间点之后原文件系统添加的新文件，如果需要完全恢复到某个时间点的状态，需要在DeviceManager创建新文件系统，并在恢复时指定此新文件系统进行恢复。</li><li id="ZH-CN_TOPIC_0000001234156055__li4213967375">请确保在恢复期间无其他用户读写此文件系统，否则可能造成数据不一致甚至数据被损坏。</li><li id="ZH-CN_TOPIC_0000001234156055__li174754564378">恢复操作不可逆。如果恢复失败，数据不会回滚，有部分数据可能被损坏。</li></ul>
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<div class="section" id="ZH-CN_TOPIC_0000001234156055__section8681622175017"><h4 class="sectiontitle">操作步骤</h4><ol id="ZH-CN_TOPIC_0000001234156055__ol16757174020210"><li id="ZH-CN_TOPIC_0000001234156055__li0198134611381"><span>选择<span class="uicontrol" id="ZH-CN_TOPIC_0000001234156055__uicontrol9143133018394">“<span id="ZH-CN_TOPIC_0000001234156055__text154711237125112">数据利用</span> &gt; <span id="ZH-CN_TOPIC_0000001234156055__text3405121755116">副本数据</span> &gt; <span id="ZH-CN_TOPIC_0000001234156055__text143872273215">本地文件系统</span>”</span>。</span></li><li id="ZH-CN_TOPIC_0000001234156055__li16838123165113"><span>支持以资源维度或以副本维度查找副本，本节以资源维度为例进行说明。</span><p><p id="ZH-CN_TOPIC_0000001234156055__p624620403810">在“<span id="ZH-CN_TOPIC_0000001234156055__text109615164515">资源</span>”页签，根据文件系统名称查找到需要恢复的文件系统，并单击文件系统名称。</p>
</p></li><li id="ZH-CN_TOPIC_0000001234156055__li02165214225"><span>单击<span class="uicontrol" id="ZH-CN_TOPIC_0000001234156055__uicontrol1812414562220">“<span id="ZH-CN_TOPIC_0000001234156055__text18993182162710">副本数据</span>”</span>，依次选择年、月、天找到副本。</span><p><p id="ZH-CN_TOPIC_0000001234156055__p9918150182310">当时间下方显示<span><img id="ZH-CN_TOPIC_0000001234156055__image99531319193912" src="zh-cn_image_0000001633402881.png"></span>，即表示该月、该天存在副本。</p>
</p></li><li id="ZH-CN_TOPIC_0000001234156055__li7995952193812"><span>在副本所在的行，单击<span class="uicontrol" id="ZH-CN_TOPIC_0000001234156055__uicontrol4705161613273">“<span id="ZH-CN_TOPIC_0000001234156055__text04951528155216">更多</span> &gt; <span id="ZH-CN_TOPIC_0000001234156055__text10563196143711">恢复</span>”</span>。</span></li><li id="ZH-CN_TOPIC_0000001234156055__li13784144616523"><span>恢复文件系统至原位置或新位置。</span><p><ul id="ZH-CN_TOPIC_0000001234156055__ul986645815212"><li id="ZH-CN_TOPIC_0000001234156055__li14334122372716">恢复文件系统至原位置。<ol type="a" id="ZH-CN_TOPIC_0000001234156055__ol184971645183410"><li id="ZH-CN_TOPIC_0000001234156055__li649744593413">选择恢复至<span class="uicontrol" id="ZH-CN_TOPIC_0000001234156055__uicontrol1689316172298">“<span id="ZH-CN_TOPIC_0000001234156055__text119714902916">原位置</span>”</span>。</li><li id="ZH-CN_TOPIC_0000001234156055__li5893114517537">选择对原位置文件的覆盖规则。参数说明如<a href="#ZH-CN_TOPIC_0000001234156055__table131747562531">表1</a>。
<div class="tablenoborder"><a name="ZH-CN_TOPIC_0000001234156055__table131747562531"></a><a name="table131747562531"></a><table cellpadding="4" cellspacing="0" summary="" id="ZH-CN_TOPIC_0000001234156055__table131747562531" frame="border" border="1" rules="all"><caption><b>表1 </b>恢复文件系统参数说明</caption><colgroup><col style="width:35.8%"><col style="width:64.2%"></colgroup><thead align="left"><tr id="ZH-CN_TOPIC_0000001234156055__row1717417561533"><th align="left" class="cellrowborder" valign="top" width="35.8%" id="mcps1.3.4.2.5.2.1.1.1.2.2.2.3.1.1"><p id="ZH-CN_TOPIC_0000001234156055__p12174175614538">参数</p>
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<th align="left" class="cellrowborder" valign="top" width="64.2%" id="mcps1.3.4.2.5.2.1.1.1.2.2.2.3.1.2"><p id="ZH-CN_TOPIC_0000001234156055__p10174256105311">说明</p>
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<tbody><tr id="ZH-CN_TOPIC_0000001234156055__row11741456145310"><td class="cellrowborder" valign="top" width="35.8%" headers="mcps1.3.4.2.5.2.1.1.1.2.2.2.3.1.1 "><p id="ZH-CN_TOPIC_0000001234156055__p4174256175313"><span id="ZH-CN_TOPIC_0000001234156055__text12274256133210">忽略已存在的文件</span></p>
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<td class="cellrowborder" valign="top" width="64.2%" headers="mcps1.3.4.2.5.2.1.1.1.2.2.2.3.1.2 "><p id="ZH-CN_TOPIC_0000001234156055__p6558173523711">对于文件系统中已经存在的文件，恢复时将不做处理。</p>
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<tr id="ZH-CN_TOPIC_0000001234156055__row717445615317"><td class="cellrowborder" valign="top" width="35.8%" headers="mcps1.3.4.2.5.2.1.1.1.2.2.2.3.1.1 "><p id="ZH-CN_TOPIC_0000001234156055__p317411569536"><span id="ZH-CN_TOPIC_0000001234156055__text61116413337">直接替换已经存在的文件</span></p>
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<td class="cellrowborder" valign="top" width="64.2%" headers="mcps1.3.4.2.5.2.1.1.1.2.2.2.3.1.2 "><p id="ZH-CN_TOPIC_0000001234156055__p61741756105318">对于文件系统中已经存在的文件，恢复时将替换原文件。</p>
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<tr id="ZH-CN_TOPIC_0000001234156055__row101741656165318"><td class="cellrowborder" valign="top" width="35.8%" headers="mcps1.3.4.2.5.2.1.1.1.2.2.2.3.1.1 "><p id="ZH-CN_TOPIC_0000001234156055__p191742565539"><span id="ZH-CN_TOPIC_0000001234156055__text758161017330">只替换比恢复文件更旧的文件</span></p>
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<td class="cellrowborder" valign="top" width="64.2%" headers="mcps1.3.4.2.5.2.1.1.1.2.2.2.3.1.2 "><p id="ZH-CN_TOPIC_0000001234156055__p1117495613531">对于文件系统中已经存在的文件，只替换比恢复文件更旧的文件。</p>
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</li></ol>
</li><li id="ZH-CN_TOPIC_0000001234156055__li2092614115279">恢复文件系统至新位置。<ol type="a" id="ZH-CN_TOPIC_0000001234156055__ol840332513717"><li id="ZH-CN_TOPIC_0000001234156055__li10403112519378">选择恢复至<span class="uicontrol" id="ZH-CN_TOPIC_0000001234156055__uicontrol987973893010">“<span id="ZH-CN_TOPIC_0000001234156055__text2954114743010">新位置</span>”</span>。</li><li id="ZH-CN_TOPIC_0000001234156055__li312013893720">选择文件系统。</li><li id="ZH-CN_TOPIC_0000001234156055__li195344893713">选择共享名称。</li><li id="ZH-CN_TOPIC_0000001234156055__li178161431175814">选择对新位置文件的覆盖规则。参数说明如<a href="#ZH-CN_TOPIC_0000001234156055__table131747562531">表1</a>。</li></ol>
</li></ul>
</p></li><li id="ZH-CN_TOPIC_0000001234156055__li1168243513296"><span>单击<span class="uicontrol" id="ZH-CN_TOPIC_0000001234156055__uicontrol8682163517294">“<span id="ZH-CN_TOPIC_0000001234156055__text1653122512336">确定</span>”</span>。</span></li><li id="ZH-CN_TOPIC_0000001234156055__li15102319133518"><span>仔细阅读危险提示，勾选“<span id="ZH-CN_TOPIC_0000001234156055__text157054506106">我已阅读上述信息，了解执行此操作带来的后果</span>”后，单击“<span id="ZH-CN_TOPIC_0000001234156055__text09092213211">确定</span>”。</span></li></ol>
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